ALBANY - Gov. Eliot Spitzer has informed his most senior administration officials that he had been involved in a prostitution ring, an administration official said this morning.

Mr. Spitzer, who was huddled with his top aides inside his Fifth Avenue apartment early this afternoon, had hours earlier abruptly canceled his scheduled public events for the day. He scheduled an announcement for 2:15 after inquiries from the Times.

Mr. Spitzer, a first-term Democrat who pledged to bring ethics reform and end the often seamy ways of Albany, is married with three children.

Just last week, federal prosecutors arrested four people in connection with an expensive prostitution operation. Administration officials would not say that this was the ring with which the governor had become involved.

But a person with knowledge of the governor’s role said that the person believes the governor is one of the men identified as clients in court papers.

The governor’s travel records show that he was in Washington in mid-February. One of the clients described in court papers arranged to meet with a prostitute who was part of the ring, the Emperors Club VIP on the night of Feb. 13.